scholarly journals A Density Theorem on the Operator Algebra in Pontrjagin Space

2002 ◽  
Vol 268 (1) ◽  
pp. 143-156 ◽  
Author(s):  
Tong Yusun
Keyword(s):  
Operator Algebra ◽  
Density Theorem ◽  
Pontrjagin Space

On Isbell's density theorem for bitopological pointfree spaces I

2020 ◽  
Vol 273 ◽  
pp. 106962
Author(s):  
M. Andrew Moshier ◽  
Imanol Mozo Carollo ◽  
Joanne Walters-Wayland
Keyword(s):  
Density Theorem

scholarly journals Operator Algebras with Unique Preduals

2011 ◽  
Vol 54 (3) ◽  
pp. 411-421 ◽  
Author(s):  
Kenneth R. Davidson ◽  
Alex Wright
Keyword(s):  
Banach Space ◽  
Operator Algebra ◽  
Free Semigroup ◽  
Operator Algebras ◽  
Compact Operators ◽  
Semigroup Algebra ◽  
Dense Subalgebra

AbstractWe show that every free semigroup algebra has a (strongly) unique Banach space predual. We also provide a new simpler proof that a weak-∗ closed unital operator algebra containing a weak-∗ dense subalgebra of compact operators has a unique Banach space predual.

A new proof for the residual set dimension of the apollonian packing

1984 ◽  
Vol 96 (3) ◽  
pp. 413-423 ◽  
Author(s):  
Claude Tricot
Keyword(s):  
Hausdorff Dimension ◽  
Density Theorem ◽  
Residual Set ◽  
Curvilinear Triangle

AbstractLet (Dn) be the apollonian packing of a curvilinear triangle T, ρn the radius of Dn, E = T—U Dn the residual set, dim (E) its Hausdorff dimension. In this paper we give a new proof of the equality dim proved by Boyd [2]. Our technique is to construct a sequence of regular triangles covering E, and suitable measures μkcarried by E which allow us to apply a density theorem.

scholarly journals A Converse of Artin′s Density Theorem: The Case of Cubic Fields

1993 ◽  
Vol 45 (1) ◽  
pp. 28-44 ◽  
Author(s):  
I. Delcorso ◽  
R. Dvornicich
Keyword(s):  
Density Theorem ◽  
Cubic Fields
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